V4L/DVB (6423): Add tuner-xc2028 driver
Add support for Xceive XC2028/XC3028 tuner driver
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c
new file mode 100644
index 0000000..cfcc1fe
--- /dev/null
+++ b/drivers/media/video/tuner-xc2028.c
@@ -0,0 +1,391 @@
+/* tuner-xc2028
+ *
+ * Copyright (c) 2007 Mauro Carvalho Chehab (mchehab@infradead.org)
+ * This code is placed under the terms of the GNU General Public License v2
+ */
+
+#include <linux/i2c.h>
+#include <asm/div64.h>
+#include <linux/firmware.h>
+#include <linux/videodev.h>
+#include <linux/delay.h>
+#include "tuner-driver.h"
+#include "tuner-xc2028.h"
+
+/* Firmwares used on tm5600/tm6000 + xc2028/xc3028 */
+static const char *firmware_6M = "tm6000_xc3028_DTV_6M.fw";
+static const char *firmware_8M = "tm6000_xc3028_78M.fw";
+static const char *firmware_DK = "tm6000_xc3028_DK_PAL_MTS.fw";
+static const char *firmware_MN = "tm6000_xc3028_MN_BTSC.fw";
+
+struct xc2028_data {
+ v4l2_std_id firm_type; /* video stds supported by current firmware */
+ int bandwidth; /* Firmware bandwidth: 6M, 7M or 8M */
+ int need_load_generic; /* The generic firmware were loaded? */
+};
+
+#define i2c_send(rc,c,buf,size) \
+if (size != (rc = i2c_master_send(c, buf, size))) \
+ tuner_warn("i2c output error: rc = %d (should be %d)\n", \
+ rc, (int)size);
+
+#define i2c_rcv(rc,c,buf,size) \
+if (size != (rc = i2c_master_recv(c, buf, size))) \
+ tuner_warn("i2c input error: rc = %d (should be %d)\n", \
+ rc, (int)size);
+
+#define send_seq(c, data...) \
+{ int rc; \
+ const static u8 _val[] = data; \
+ if (sizeof(_val) != \
+ (rc = i2c_master_send \
+ (c, _val, sizeof(_val)))) { \
+ printk(KERN_ERR "Error on line %d: %d\n",__LINE__,rc); \
+ return; \
+ } \
+ msleep (10); \
+}
+
+static int xc2028_get_reg(struct i2c_client *c, u16 reg)
+{
+ int rc;
+ unsigned char buf[1];
+ struct tuner *t = i2c_get_clientdata(c);
+
+ buf[0]= reg;
+
+ i2c_send(rc, c, buf, sizeof(buf));
+ if (rc<0)
+ return rc;
+
+ if (t->tuner_callback) {
+ rc = t->tuner_callback( c->adapter->algo_data,
+ XC2028_RESET_CLK, 0);
+ if (rc<0)
+ return rc;
+ }
+
+ i2c_rcv(rc, c, buf, 2);
+ if (rc<0)
+ return rc;
+
+ return (buf[1])|(buf[0]<<8);
+}
+
+static int load_firmware (struct i2c_client *c, const char *name)
+{
+ const struct firmware *fw=NULL;
+ struct tuner *t = i2c_get_clientdata(c);
+ unsigned char *p, *endp;
+ int len=0, rc=0;
+ static const char firmware_ver[] = "tm6000/xcv v1";
+
+ tuner_info("Loading firmware %s\n", name);
+ rc = request_firmware(&fw, name, &c->dev);
+ if (rc < 0) {
+ tuner_info("Error %d while requesting firmware\n", rc);
+ return rc;
+ }
+ p=fw->data;
+ endp=p+fw->size;
+
+ if(fw->size==0) {
+ tuner_info("Error: firmware size is zero!\n");
+ rc=-EINVAL;
+ goto err;
+ }
+ if (fw->size<sizeof(firmware_ver)-1) {
+ /* Firmware is incorrect */
+ tuner_info("Error: firmware size is less than header (%d<%d)!\n",
+ (int)fw->size,(int)sizeof(firmware_ver)-1);
+ rc=-EINVAL;
+ goto err;
+ }
+
+ if (memcmp(p,firmware_ver,sizeof(firmware_ver)-1)) {
+ /* Firmware is incorrect */
+ tuner_info("Error: firmware is not for tm5600/6000 + Xcv2028/3028!\n");
+ rc=-EINVAL;
+ goto err;
+ }
+ p+=sizeof(firmware_ver)-1;
+
+ while(p<endp) {
+ if ((*p) & 0x80) {
+ /* Special callback command received */
+ rc = t->tuner_callback(c->adapter->algo_data,
+ XC2028_TUNER_RESET, (*p)&0x7f);
+ if (rc<0) {
+ tuner_info("Error at RESET code %d\n",
+ (*p)&0x7f);
+ goto err;
+ }
+ p++;
+ continue;
+ }
+ len=*p;
+ p++;
+ if (p+len+1>endp) {
+ /* Firmware is incorrect */
+ tuner_info("Error: firmware is truncated!\n");
+ rc=-EINVAL;
+ goto err;
+ }
+ if (len<=0) {
+ tuner_info("Error: firmware file is corrupted!\n");
+ rc=-EINVAL;
+ goto err;
+ }
+
+ i2c_send(rc, c, p, len);
+ if (rc<0)
+ goto err;
+ p+=len;
+
+ if (*p)
+ msleep(*p);
+ p++;
+ }
+
+
+err:
+ release_firmware(fw);
+
+ return rc;
+}
+
+static int check_firmware(struct i2c_client *c)
+{
+ int rc, version;
+ struct tuner *t = i2c_get_clientdata(c);
+ struct xc2028_data *xc2028 = t->priv;
+ const char *name;
+
+ if (!t->tuner_callback) {
+ printk(KERN_ERR "xc2028: need tuner_callback to load firmware\n");
+ return -EINVAL;
+ }
+
+ if (xc2028->need_load_generic) {
+ if (xc2028->bandwidth==6)
+ name = firmware_6M;
+ else
+ name = firmware_8M;
+
+ /* Reset is needed before loading firmware */
+ rc = t->tuner_callback(c->adapter->algo_data,
+ XC2028_TUNER_RESET, 0);
+ if (rc<0)
+ return rc;
+
+ rc = load_firmware(c,name);
+ if (rc<0)
+ return rc;
+
+ xc2028->need_load_generic=0;
+ xc2028->firm_type=0;
+ }
+
+ if (xc2028->firm_type & t->std)
+ return 0;
+
+ if (t->std & V4L2_STD_MN)
+ name=firmware_MN;
+ else
+ name=firmware_DK;
+
+ rc = load_firmware(c,name);
+ if (rc<0)
+ return rc;
+
+ version = xc2028_get_reg(c, 0x4);
+ tuner_info("Firmware version is %d.%d\n",
+ (version>>4)&0x0f,(version)&0x0f);
+
+ xc2028->firm_type=t->std;
+
+ return 0;
+}
+
+static int xc2028_signal(struct i2c_client *c)
+{
+ int lock, signal;
+
+ if (check_firmware(c)<0)
+ return 0;
+
+ lock = xc2028_get_reg(c, 0x2);
+ if (lock<=0)
+ return lock;
+
+ /* Frequency is locked. Return signal quality */
+
+ signal = xc2028_get_reg(c, 0x40);
+
+ if(signal<=0)
+ return lock;
+
+ return signal;
+}
+
+#define DIV 15625
+
+static void set_tv_freq(struct i2c_client *c, unsigned int freq)
+{
+ int rc;
+ unsigned char buf[5];
+ struct tuner *t = i2c_get_clientdata(c);
+ unsigned long div = (freq*62500l+DIV/2)/DIV;
+
+ if (check_firmware(c)<0)
+ return;
+
+ /* Reset GPIO 1 */
+ if (t->tuner_callback) {
+ rc = t->tuner_callback( c->adapter->algo_data,
+ XC2028_TUNER_RESET, 0);
+ if (rc<0)
+ return;
+ }
+ msleep(10);
+
+ send_seq (c, {0x12, 0x39});
+ send_seq (c, {0x0c, 0x80, 0xf0, 0xf7, 0x3e, 0x75, 0xc1, 0x8a, 0xe4});
+ send_seq (c, {0x0c, 0x02, 0x00});
+ send_seq (c, {0x05, 0x0f, 0xee, 0xaa, 0x5f, 0xea, 0x90});
+ send_seq (c, {0x06, 0x00, 0x0a, 0x4d, 0x8c, 0xf2, 0xd8, 0xcf, 0x30});
+ send_seq (c, {0x06, 0x79, 0x9f});
+ send_seq (c, {0x0b, 0x0d, 0xa4, 0x6c});
+ send_seq (c, {0x0a, 0x01, 0x67, 0x24, 0x40, 0x08, 0xc3, 0x20, 0x10});
+ send_seq (c, {0x0a, 0x64, 0x3c, 0xfa, 0xf7, 0xe1, 0x0c, 0x2c});
+ send_seq (c, {0x09, 0x0b});
+ send_seq (c, {0x10, 0x13});
+ send_seq (c, {0x16, 0x12});
+ send_seq (c, {0x1f, 0x02});
+ send_seq (c, {0x21, 0x02});
+ send_seq (c, {0x01, 0x02});
+ send_seq (c, {0x2b, 0x10});
+ send_seq (c, {0x02, 0x02});
+ send_seq (c, {0x02, 0x03});
+ send_seq (c, {0x00, 0x8c});
+
+ send_seq (c, {0x00, 0x01, 0x00, 0x00});
+ send_seq (c, {0x00, 0xcc, 0x20, 0x06});
+ send_seq (c, {0x2b, 0x1a});
+ send_seq (c, {0x2b, 0x1b});
+ send_seq (c, {0x14, 0x01, 0x1b, 0x19, 0xb5, 0x29, 0xab, 0x09, 0x55});
+ send_seq (c, {0x14, 0x44, 0x05, 0x65});
+ send_seq (c, {0x13, 0x18, 0x08, 0x00, 0x00, 0x6c, 0x18, 0x16, 0x8c});
+ send_seq (c, {0x13, 0x49, 0x2a, 0xab});
+ send_seq (c, {0x0d, 0x01, 0x4b, 0x03, 0x97, 0x55, 0xc7, 0xd7, 0x00});
+ send_seq (c, {0x0d, 0xa1, 0xeb, 0x8f, 0x5c});
+ send_seq (c, {0x1a, 0x00, 0x00, 0x16, 0x8a, 0x40, 0x00, 0x00, 0x00, 0x20});
+ send_seq (c, {0x2d, 0x01});
+ send_seq (c, {0x18, 0x00});
+ send_seq (c, {0x1b, 0x0d, 0x86, 0x51, 0xd2, 0x35, 0xa4, 0x92, 0xa5});
+ send_seq (c, {0x1b, 0xb5, 0x25, 0x65});
+ send_seq (c, {0x1d, 0x00});
+ send_seq (c, {0x0f, 0x00, 0x29, 0x56, 0xb0, 0x00, 0xb6});
+ send_seq (c, {0x20, 0x00});
+ send_seq (c, {0x1e, 0x09, 0x02, 0x5b, 0x6c, 0x00, 0x4b, 0x81, 0x56});
+ send_seq (c, {0x1e, 0x46, 0x69, 0x0b});
+ send_seq (c, {0x22, 0x32});
+ send_seq (c, {0x23, 0x0a});
+ send_seq (c, {0x25, 0x00, 0x09, 0x90, 0x09, 0x06, 0x64, 0x02, 0x41});
+ send_seq (c, {0x26, 0xcc});
+ send_seq (c, {0x29, 0x40});
+ send_seq (c, {0x21, 0x03});
+ send_seq (c, {0x00, 0x8c});
+ send_seq (c, {0x00, 0x00, 0x00, 0x00});
+
+ /* CMD= Set frequency */
+ send_seq(c, {0x00, 0x02, 0x00, 0x00});
+ if (t->tuner_callback) {
+ rc = t->tuner_callback( c->adapter->algo_data,
+ XC2028_RESET_CLK, 1);
+ if (rc<0)
+ return;
+ }
+
+ msleep(10);
+// send_seq(c, {0x00, 0x00, 0x10, 0xd0, 0x00});
+// msleep(100);
+ buf[0]= 0xff & (div>>24);
+ buf[1]= 0xff & (div>>16);
+ buf[2]= 0xff & (div>>8);
+ buf[3]= 0xff & (div);
+ buf[4]= 0;
+
+ i2c_send(rc, c, buf, sizeof(buf));
+ if (rc<0)
+ return;
+ msleep(100);
+
+ printk("divider= %02x %02x %02x %02x (freq=%d.%02d)\n",
+ buf[1],buf[2],buf[3],buf[4],
+ freq / 16, freq % 16 * 100 / 16);
+// printk("signal=%d\n",xc2028_signal(c));
+}
+
+
+static void xc2028_release(struct i2c_client *c)
+{
+ struct tuner *t = i2c_get_clientdata(c);
+
+ kfree(t->priv);
+ t->priv = NULL;
+}
+
+static struct tuner_operations tea5767_tuner_ops = {
+ .set_tv_freq = set_tv_freq,
+ .has_signal = xc2028_signal,
+ .release = xc2028_release,
+// .is_stereo = xc2028_stereo,
+};
+
+
+static int init=0;
+
+int xc2028_tuner_init(struct i2c_client *c)
+{
+ struct tuner *t = i2c_get_clientdata(c);
+ int version = xc2028_get_reg(c, 0x4);
+ int prd_id = xc2028_get_reg(c, 0x8);
+ struct xc2028_data *xc2028;
+
+ if (init) {
+ printk (KERN_ERR "Module already initialized!\n");
+ return 0;
+ }
+ init++;
+
+ xc2028 = kzalloc(sizeof(*xc2028), GFP_KERNEL);
+ if (!xc2028)
+ return -ENOMEM;
+ t->priv = xc2028;
+
+#ifdef HACK
+ xc2028->firm_type=1;
+ xc2028->bandwidth=6;
+#endif
+ xc2028->bandwidth=6;
+ xc2028->need_load_generic=1;
+
+ /* FIXME: Check where t->priv will be freed */
+
+ if (version<0)
+ version=0;
+
+ if (prd_id<0)
+ prd_id=0;
+
+ strlcpy(c->name, "xc2028", sizeof(c->name));
+ tuner_info("type set to %d (%s, hw ver=%d.%d, fw ver=%d.%d, id=0x%04x)\n",
+ t->type, c->name,
+ (version>>12)&0x0f,(version>>8)&0x0f,
+ (version>>4)&0x0f,(version)&0x0f, prd_id);
+
+ memcpy(&t->ops, &tea5767_tuner_ops, sizeof(struct tuner_operations));
+
+ return 0;
+}